Study on the analytical prediction model of ground vibration response induced by metro floating-type track

Wu Zong-zhen ;Liu Wei-ning;Ma Long-xiang;Wang Wen-bin

Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (17) : 132-137.

PDF(1889 KB)
PDF(1889 KB)
Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (17) : 132-137.
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Study on the analytical prediction model of ground vibration response induced by metro floating-type track

  • Wu Zong-zhen 1 ,Liu Wei-ning 1,Ma Long-xiang 1,Wang Wen-bin 2
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Abstract

Based on the vibration transmission characteristics in soil, an analytical prediction model of ground vibration response induced by metro floating-type track is presented. Through the model, the calculation of ground vibration response is transferred to two parts—forces on the base of floating-type track and soil vibration frequency response functions. Then method of superposition in frequency domain is adopted to calculate the ground vibration response induced by metro. The model is used to predict the ground vibration response at the floating slab track section of Beijing Metro Line 4, and in-site measurements is also done to validate the calculated results vibration response. Comparative results show that: the main vibration frequencies of prediction results and measurement results are both around 8~10Hz and they have the same vibration amplitudes in frequency domain. The Z vibration level is 54.0dB for the measurements and 56.1dB for the prediction. The analytical prediction model has characteristics of fast speed, high accuracy and prediction in frequency domain. The model can effectively predict ground vibrations induced by metro. And it’s an effective supplement to the existing environmental assessment prediction methods.

Key words

metro / floating-type track / ground vibration response / prediction model / experimental validation

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Wu Zong-zhen ;Liu Wei-ning;Ma Long-xiang;Wang Wen-bin . Study on the analytical prediction model of ground vibration response induced by metro floating-type track[J]. Journal of Vibration and Shock, 2014, 33(17): 132-137
PDF(1889 KB)

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